Automatic train-stop.



' 1. H. K. McC OLLUM. AUTOMATIC TRAIN STOP.

APPLICATION FILED MAY 3, 1909.

1,150,377. Patented Aug. 17,1915.

c LUMBIA FLANOGRAPH couwAsllmamN. h. t.

7 JAMES 'HARRY KnIeHLYnEooL IIM, or ugononro, olvraiuo, cnivnnnl TaaZZ whom it; may 60mm;

' Be it known-thatl, J AMEsI-IARRY KniGHLr adapted to render the stop mechanism in- 1 treme *ends=5 being sloped downwardly from i the said lower levels. The stationary mem- MOCOLLUM, a subjectkt the; :of Great Britain, and resident of the cityof Toronto, county otfYork,:Province of AGIIlJitI'lOylIl the. Dominion of (Danada; haveinvented certain new and u'seful lmprovements in Automatic Train-stops of which the following-ins a specificationp 7 a The inventlon relates to lm'provementsnin automatic train Y stops I as described an. the fol-lewmg specification andsillustratecl in the the-sameiv T-heinventlon consists essentially n the novel construction and, arrangement of accompanying drawings that form: part of parts, whereby a stationary contactmember ordinarily i11 the path of a a contact 7 member'extendingfrom the vehicle has theeiiect of operatingi the arresting mechanism in saidvehicle, and whereby electric means are operative under certain'conditions.

The Qb ects of the lnventlonare, todevlse atrain stop mechan sm w'hlchmay be controlled by present known signaling systems and which will automatically stop the train in the event oflthe failure of the engineer to observe; a danger signal, 1 or: 'afailure in any of the electrical connections- In the drawings,- Eig urellis a diagram' matlc view otmy invention showing the electrical connections toa signal circuitand t0 the electrically operated mechanism on i the train. F 1g. 2 is a cross sect onal view showing the obstru'ctingmember and valve mechanism. 7

Like numerals of reference indicate corresponding parts in each'tigure, 7

Referring to the-drawlng's, 1- is the sta tionaryl obstructing member in theform of an invertedT section formed with its: upper edgearranged intwo levels 2 and 3, the

upper level 3 being connectedtothe lowerlevel 2 by theslopi'ng sections 4; and the exber 1 is supported on suitableinsulating Annemariemitiirifsiici ff -v -41 i V i Specification r Lettert Patent. at nt Aug 17, 1915, np ncamfi fiieanay 3,1909; sefliai nosrssgeroa"a": Y

- short distance above'the member 1 adapted to protect the said member. lations offsleet.

9"1 is the electrical signal circuit leading from a block in the running rails in advance oi thestationa'ry member andhaving 1 from accumuincluded therein the semaphore 10 and the electro-magnet l1.

12is an independent electric circuit electrically connected at one end to the member 1 and at, the other end to the running rails 6 and having interposed in the length thereof an electric switch 13 operated by the electro-magnetill;

he'signal circuit herein shown is of the normal power held clear type and requires the electric current to be flowing therethrough inorder to hold'the semaphore to indicate 'a clear track ahead. In the event of the circuit 9 being short circuited by a" train or car,.or in the event of the circuit being broken through any cause, the holding power of the electro-magnet 11 will be' impaired, and the switch 13 be allowed to swing open to breakthe circuit 12, and the signal 10 be moved" by its internal (mechanism to- Danger.

14' is a lever or shoe movably supported on the locomotive in such a manner that it may be raised or lowered and said lever is operatively connected to a suitable valve mechanism 15 adapted'to open the train line pipe16 of the automatic air brakes, in the 1 event of-thesaid lever 14: coming in contact with the obstructing member 1. The lever anduvalve are suitably insulated from the locomotivei 17 is an electrically operated mechanism here/shown in the form of an electro-magnet andsolenoid adapted, upon being energized, tolift the lever 14 and valve 15 so that the said lever will clear the obstructing member 1:in-' the passage of the trainfthe valve 15 being connected to the train line pipe by a flexible connection 18.

' The lever or shoe14= is arranged so that in its lowermost position it just clears the lower levels of the obstructing member 1 and if retained in the lowermost position will be swung upwardly through the inclined or sloping portion of the member 1 to the upper member 3, the swinging thereof opening the valve 15 and allowing the escape of air from the train line and consequently actuating the brake mechanism and stopping'the train. 1

19 is a hinged shoe fixedly: supported from the locomotiveand insulated therefrom and set on a slightly lower .level than the shoe- 14 so that it :will engage and make contact with the obstructing member 1011 the extreme sloping ends 5, said shoe being so placed that it will engage the said member 1 .before the shoe 1 1 reaches the sloping portion 4 of the obstructing member.

20 is a wire leading from the shoe-19 to.

- an electric bell 24.

25 is an electro-magnet included in the circuit 20 and arranged to close the switch 23 on the flow of current through the wire 20 thus closing the parallel circuit through the bell 24.

In the operation of this device, thecurrent, flowing through the signal circuit 9, energizes the electro-magnet 11 and attracting its armature, closes the switch 13, thus electrically connecting the member 1 with the rail 6. As the locomotive approaches the member 1 the shoe 19 comes in contact with the said member and through the frame and wires 20 and 21 closes the electric circuit 12. The current, flowing from the battery in said circuit through the mechanism 17, operates said mechanism to lift the shoe 1a clear of the obstructing member, consequently the train will pass the obstructing member. The current, flowing through the circuit 12, energizes the electromagnet 25 and closes the switch 23 throwing the electric bell 24 into parallel electrical connection and giving a positive proceed signal to the engineer, the said bell being arranged in the cab of the locomotive. In the event of the short circuiting of the circuit 9 by another train being in the signal block in advance of the said train and cutting out the battery in the block, the cessation of flow of electric current causes open once'itis operated, until the train is In the event of a train approaching the stationai'y obstructing member 1 when a dan;

ger signal is displayed in the signal circuit, the'circuit 12 is denergized, therefore there will be no current to flow throughthe equipment on the locomotive and consequently the shoe 1 1 will remain in its lowermost position, with the result that said shoe will engage thesloping portion a of the member 1 and be tilted to operate the valve 15; opening said .valve and; making anautomatic application of thetbrakes on the train. The upper length ofthe obstructing member maybe made any desired length to hold this valveopen or suitable mechanisms maybe arranged to holdthe valve brought to a stop.

The parts herein shown and described are merely dlagrammatlc 1n form and 1t must be understood that any suitable valve mech 'anism, or electrically operated mechanism may be used without departing from the spirit of the invention so long as the main feature isfadhered to, thatis to say, so long as the brake mechanism is operated by the contact of a movable member supported on the locomotive with a stationary obstructing member arranged in its path, the former being operated to render the stop mechanism inoperative when normal conditions are to give the train a clear passage. I V

The preferable method of rendering tem porarily inoperative the mechanism for actuating the arresting mechanism of the train has been described but the same object maybe attained without departing from the spirit of the invention, that is to say, it has been explained that the said mechanism is rendered inoperative by being lifted clear of the obstructing member but the contact arm or shoe may be fixed and the valve mechanism rendered temporarily inoperative by the electrically operated mechanism.

l/Vhat I claim as my. invention is 1. In an automatic train stop, a brake mechanism. on the train, a member adapted to operate said mechanism and movably supported on and projecting from the train, a stationary obstructing member arranged in the path of said projecting member, electrically actuated means for moving said proj ecting member to clear said obstructing member, a shoe projecting from the train, a

partial circuit connected with said shoe and V contact member eartending from said vehicle, an arresting mechanism on said" vehicle controlled by themovement of sa d contact member, a stationary contact member arranged in the path of the aforesaid contact member, an electric signal circuit energized under normal clear trackway conditions, an open electric circuit controlled by said signal circuit and connected with said stationary contact, an electric contact engaging said stationary contact before said first named con tact member engages said stationary contact, and an electric mechanism in the vehicle connected with said electric contact and adapted in operation to withhold the actuating of the arresting mechanism during the energization of said signal circuit.

3. In an automatic train. stop, a vehicle, a contact member movably supported on and extending from said vehicle, an arresting mechanism operatively connected with said contact member, a stationary contact member arranged in the path of the aforesaid contact member, a signal circuit and means operated from said signal circuit for moving said movable contact member to clear said stationary contact member.

4. In an automatic train stop, a vehicle, a contact member movably supported on said vehicle and extending therefrom, an arresting mechanism on the vehicle operated by said contact member, a stationary contact member arranged in the path of the aforesaid contact member, an open electric circuit connected to said stationary contact, an electric mechanism on the vehicle for moving 7 said actuating means to clear the said obstructing member, and means contacting with said stationary contact member and closing the electric circuit through said electric moving means.

5. In an automatic train stop, the combination with the train line pipe of the arresting mechanism on a vehicle having an opening therefrom and a valve closing said opening, of means for opening said valve movably supported on the vehicle and projecting therefrom, a stationary contact member arranged in the path of said valve operating means, an open. electric circuit connected with said stationary contact, electrically operated means for moving said valve operating means to clear said stationary contact member, and means for closing an electric circuit through said electrically operated means through contact with said stationary contact.

7 6 In: an automatic train stop the combistationary contact member arranged in the path of said shoe, electrically operated means-for movlngsald shoe and sald 'va l've so that said shoe will clear said stationary contact member, an open electrlc circuit connected with said stationary contact, and a shoe supported from the train and insulated therefrom and electrically connected to said electrically operated means and adapted to contact with said stationary contact member and close the electric circuit through said electrically operated means.

7. In an automatic train stop, the combination with the train line pipe of the arresting mechanism on a vehicle, of a pivotal shoe movably supported on the vehicle and projecting therefrom, a valve operatively connected with said shoe and closing an opening from said train line pipe, a stationary contact member arranged adjacent to the running rails and having inclined surfaces, an open electric circuit connected to said stationary contact member and to the running rails, said circuit having a switch interposed therein, an electrically operated mechanism operatively connected to said shoe and valve and adapted to raise said shoe clear of said stationary contact member in the passage of the vehicle, a shoe supported on the vehicle and adapted to contact with said stationary contact member at a lower level than the aforesaid shoe, the latter shoe being electrically connected to said electrically operated means and closing the circuit to said electrically operated means through the vehicle and running rail.

8. In an automatic train stop, the combination with the train line pipe of the arresting mechanism on a vehicle, of a pivotal shoe movably supported on the train and projecting therefrom, a rotary valve connected with said train line pipe and operatively connected to said pivotal shoe and operating on the tilting of said shoe to actuate said arresting mechanism, an obstructing member having tWo distinct levels, said levels being connected by inclined surfaces, the lower level being arranged below and clear of said shoe when in its lowermost position and the inclined faces being adapted to contact with said shoe and tilt it on its pivot, an electrically operated means for raising said pivotal shoe supported on the vehicle and adapted to contact with the lower level of said obstructing member and electrically connected to said electrically operating ii tery located in the road bed having one. of

Signed at the city of Toronto, countjof York,P1-0 vince of ontario, in the Dominion 10 of Canada, this 29th day ofApril 1909.

JAMES HARRY KEIGHLY' MCGOLLUM- means for raising theaforesaid shoe, a batits terminals electrically connected to said obstructing member and the other terminal connected to the running rail, an electric switch interposed between said battery and Witnesses: t: one of its terminals, and means for closing, H. J. S. DENNISQN, said switch. I E. HERON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ZP atents,

Washington, D. O. 

